GHL PL-CALI PH4 (PL-0074)

11,95
Calibration solution of pH 4 for pH probe. Permet to calibrate the measurement of pH in fresh water as in

GHL PL-CALI PH7 (PL-0075)

11,95
Calibration solution of pH 7 for pH probe. Permet to calibrate the measurement of pH in fresh water as in

GHL PL-CALI PH9 (PL-0076)

11,95
Calibration solution of pH 9 for pH probe. Permet to calibrate the measurement of pH in fresh water as in
On order

GHL Maintenance-Kit Oxygen-Sensor (PL-0555)

127,90
Maintenance and repair kit for oxygen sensors. Maintenance may become necessary in the event of a defective membrane, bad